The helicopter was conducting an electrical power line construction operation with a lineman standing
outside on the skid. The wire was temporarily suspended by a hoist and the lineman was inserting a
fiber shoe to attach the wire to the arm of the tower. While the helicopter was hovering next to the
wire at about 200 feet above ground level the hoist slipped and the wire fell onto the top of the
helicopter's skid. Control was briefly lost and four of the helicopter's main rotor blades impacted the
tower resulting in substantial damage to the main rotor blades. The pilot quickly regained control and
made an emergency landing in tall corn about 200 feet from the accident location. (NTSB CEN13CA501)

The helicopter overflew La Alqueria neighbourhod when the pilot experienced roblems with the tail rotor. Trying to find a suitable spot for an emergency landing near the Escuela General Santander, the pilot put the helicopter down on top of a two storey home.

Near Vega Baja, Puerto Rico: The helicopter was operated by the Puerto Rico Electric Power Authority and was to assist with electrical power distribution system construction. The helicopter departed from SJU and proceeded to the work site, cruising at an altitude of 300 feet, along the northern coast line of Puerto Rico. About 20 minutes into the flight, the pilot heard a loud "bang" emanate from the area of the engine, followed by a second bang 2 to 3 seconds later. The engine then experienced a total loss of power and the pilot responded by entering an autorotative descent. During the descent, the pilot recalled hearing and observing the "low engine rpm" annunciations. The helicopter subsequently impacted an area of shallow water near a beach. During the landing, the main rotor struck the helicopter's tail boom, separating it from the fuselage. (NTSB ERA15LA280)

The experimental research and developmental helicopter's left boom impacted water during an offshore low level survey flight. The pilot's accident report stated, "While flying an easterly course line at approximately 25 knots over calm surface conditions, a course correction to the left was initiated with 2 degrees of left bank angle. This resulted in the left boom tip touching the surface of the water. The nose of the helicopter pitched down causing the main rotor blades to strike the water. The helicopter became inverted, sinking immediately. The elapsed time between the boom tip contacting the water and the helicopter becoming inverted was approximately three seconds." The pilot reported no mechanical malfunctions in reference to the survey flight. (NTSB CHI06CA266)

Autonomous flight from the United States Army's Yuma Proving Ground, flying a pre-programmed 20 minute armed intelligence, serveillance and reconnaissance mission around the facitlity.

020708

N7032C

Airworthiness test; RR 250-C30

290514

N7032C

Airworthiness test: Rolls Royce 250-C30R/3M

0142FF

MD-369FF

Bj. 2000

Engine: Allison 250-C30

050900

reg'd

N7032D

MD Helicopters Inc, Mesa, Arizona

310700

Airworthiness test

280303

reg'd

N131TZ

San Diego County Sheriff, El Cajon, California

0143FF

MD-369FF

Bj. 2000

Engine: RR 250-C30

021002

ff

N7053Y

MD Helicopters Inc, Mesa, Arizona

030903

reg'd

N530DA

Dillon Aero, Scottsdale, Arizona

0144FF

MD-369FF

Bj. 2000

Engine: RR 250-C30

271000

reg'd

N70499

MD Helicopters Inc, Mesa, Arizona

191000

Airworthiness test

060303

reg'd

N911WY

Las Vegas Metropolitan Police Department, Las Vegas, Nevada

120809

N911WY

The helicopter made an emergency landing on Las Vegas streets
after its engine failed. The two crew members on board on routine patrol
were unhurt and no damage was suffered by the airframe. Mechanics
fixed the problem on site and the helicopter lifted off again less than
two hours later.

0146FF

MD-369FF

Bj. 2006

Engine: RR 250-C30

N1605Y

MD Helicopters Inc, Mesa, Arizona

011106

Airworthiness test

131206

res

N532EZ

MD Helicopters Inc, Mesa, Arizona

131107

N532EZ

Registation Pending, S. Plainfield, New Jersey

310108

reg'd

N532EZ

PSE&G, S. Plainfield, New Jersey

0147FF

MD-369FF

Bj. 2007

Engine: RR 250-C30

N9110E

MD Helicopters Inc, Mesa, Arizona

140907

Airworthiness test

140707

res

N741DD

MD Helicopters Inc, Mesa, Arizona

150607

reg'd

N741DD

MD Helicopters Inc, Mesa, Arizona

131107

reg'd

N741DD

Verde Canyon Railroad Lc, Ogden, Utah

011215

canc

N741DD

Exported to Switserland

211215

reg'd

HB-ZSR

Robert Fuchs AG, Schindellegi, Switserland

0148FF

MD-369FF

Bj. 2007

Engine: RR 250-C30

141107

reg'd

N9020U

MD Helicopters Inc, Mesa, Arizona

201107

N9020U

Airworthiness test

150208

reg'd

N9020U

K & S Helicopters Inc, Kailua Kona, Hawaii

030108

reg'd

N530PH

K & S Helicopters Inc, Kailua Kona, Hawaii

0149FF

MD-369FF

Bj. 200.

Engine: RR 250-C30

150208

reg'd

N9045C

MD Helicopters Inc, Mesa, Arizona

090408

canc

N9045C

exported to New Zealand

240408

reg'd

ZK-HUJ

Coastwide Helicopters Ltd, Paroa Terrace, Greymouth, New Zealand

100810

reg'd

ZK-HUJ

071010

reg'd

ZK-HUJ

Mount Hutt Helicopters Ltd, Ashburton, New Zealand

020615

reg'd

ZK-HUJ

Ruggs Holdings Ltd, Greymounth, New Zealand

110216

reg'd

ZK-HUJ

Raplph Schltz Helicopters Limited, Maungaturoto, New Zealand

0150FF

MD-369FF

Bj. 2008

Engine: RR 250-C30

050308

reg'd

N90544

MD Helicopters Inc, Mesa, Arizona

010708

canc

N90544

exported to Canada

040708

reg'd

C-FVGK

Guardian Helicopters Inc, Salgary, Alberta, Canada

300511

canc

C-FVGK

Guardian Helicopters Inc, Salgary, Alberta, Canada

160611

reg'd

C-FVGK

1124498 Alberta Ltd, Grand Cache, Alberta, Canada

0151FF

MD-369FF

Bj. 2008

Engine: RR 250-C30

140308

reg'd

N530GM

MD Helicopters Inc, Mesa, Arizona

020708

N530GM

Airworthiness test

200808

reg'd

N530GM

George Mandes, Homer, Alaska

130111

reg'd

N530GM

Winco Inc, Aurora, Oregon

0152FF

MD-369FF

Bj. 2000

Engine: RR 250-C30

240408

reg'd

N9073K

MD Helicopters Inc, Mesa, Arizona

150708

canc

N9073K

exported to South Africa

220808

reg'd

ZS-BBG

Voertuie Vir Almal (PTY) Ltd

0153FF

MD-369FF

Bj. 2008

Engine:

160708

reg'd

N4007J

MD Helicopters Inc, Mesa, Arizona

191208

N4007J

530RP LLC

301208

re'gd

N4007J

310810

reg'd

N530RP

Cielo de Corte LLC, Anchorage, Alaska

041016

reg'd

N530RP

Gilliam Aviation LLC, Odessa, Texas

0154FF

MD-369FF

Bj. 2008

Engine:

070808

reg'd

N4009K

MD Helicopters Inc, Mesa, Arizona

161208

reg'd

N4009K

Hy-wing Aviation Inc, Rancho Santa Fe, California

180909

reg'd

N4009K

Overseas Aircraft Support Inc, Lakeside, Arizona

151009

reg'd

N4009K

Dyncorp International LLC, Fort Worth, Texas

161109

reg'd

N4009K

US Department of State, Patrick AFB, Florida

0155FF

MD-369FF

Bj. 2008

Engine: Rolls Royce 250-C30

200808

reg'd

N4010P

MD Helicopters Inc, Mesa, Arizona

081108

N4010P

Airworthiness test

050109

reg'd

N530WY

Walker Creek Ranch LLC, Casper, Wyoming

300414

reg'd

N530WY

Helibro LLC, Red Bluff, California

300414

res

N531PJ

Helibro LLC, Red Bluff, California

300414

reg'd

N531PJ

Helibro LLC, Red Bluff, Califronia

0156FF

MD-369FF

Bj. 2008

Engine: Rolls Royce 250-C30

301208

N4043N

Airworthiness test

090209

reg'd

N4043N

MD Helicopters Inc, Mesa, Arizona

190309

reg'd

N151SJ

Ecolift Corp. San Juan, Puerto Rico

231109

reg'd

N151SJ

US Department of State, Patrick AFB, Florida

231109

res

N155DY

US Department of State, Patrick AFB, Florida

070510

reg'd

N155DY

US Department of State, Patrick AFB, Florida

0157FF

MD-369FF

Bj. 2008

Engine: RR 250-C30

N40489

MD Helicopters Inc, Mesa, Arizona

N40489

Heli Mart Inc, Costa Mesa, Arizona, California

150109

canc

N40489

exported to Canada

160109

reg'd

C-GLGF

D.K. Heli-Cropper Int'l Ltd, Abbotsford, British Colombia, Canada

100712

canc

C-GLGF

Exported to USA

100712

reg'd

N530AR

Polar Star Corp, Kalispell, Montana

130712

N530AR

Airworthiness test

0158FF

MD-369FF

Bj. 2008

Engine: RR 250-C30

N4051L

MD Helicopters Inc, Mesa, Arizona

210109

N4051L

Airworthiness test

270409

canc

N4051L

exported to Germany

270409

reg'd

D-HORO

140509

ff

D-HORO

000509

reg'd

OM-MDM

Tech-Mont Helicopter Company, Spol S.R.O.

0159FF

MD-369FF

Bj. 2008

Engine: RR 250-C30

N40535

MD Helicopters Inc, Mesa, Arizona

240109

N40535

Airworthiness test

260309

canc

N40535

exported to Ecuador

260209

operational

PN-116

Ecuador Air Force, SAP Base Guaya

0160FF

MD-369FF

Bj. 2009

Engine: RR 250-C30

N875SA

MD Helicopters Inc, Mesa, Arizona

110209

N875SA

Airworthiness test

201109

reg'd

N875SA

US Department of State, Patrick AFB , Florida

0161FF

MD-369FF

Bj. 2009

Engine: RR 250-C30

N4054L

MD Helicopters Inc, Mesa, Arizona

200309

N4054L

Airworthiness test

290409

reg'd

N4054L

J.L. Mark Inc, Tempe, Arizona

290409

reg'd

N43M

J.L. Mark Inc, Tempe, Arizona

180711

reg'd

N43M

Emerald Aviation LLC, Lima, MT

0162FF

MD-369FF

Bj. 2009

Engine: RR 250-C30

N40593

MD Helicopters Inc, Mesa, Arizona

140409

N40593

Airworthiness test

040609

canc

N40593

exported to Ecuador

060409

operational

PN-118

Ecuador Air Force,
SAP Base Guaya; GIR badge

0163FF

MD-369FF

Bj. 2009

Engine: RR 250-C30

230508

res

N4196R

MD Helicopters Inc, Mesa, Arizona

141009

N4196R

Airworthiness test

N4196R

MD Helicopters Inc, Mesa, Arizona

070814

canc

N4169R

Exported to Ecuador

..1009

operational

PN-120

Ecuador Air Force, SAP Base Guaya

0164FF

MD-369FF

Bj. 2009

Engine: RR 250-C30

N161TV

MD Helicopters Inc, Mesa, Arizona

210909

N161TV

Airworthiness test

220110

reg'd

N161TV

Tennessee Valley Authority, Muscle Shoals, Alabama

0165FF

MD-369FF

Bj. 2009

Engine: RR 250-C30

not build yet

0166FF

MD-369FF

Bj.

Engine:

not build yet

0167FF

MD-369FF

Bj.

Engine:

not build yet

0168FF

MD-369FF

Bj.

Engine:

not build yet

0169FF

MD-369FF

Bj.

Engine:

not build yet

0170FF

MD-369FF

Bj.

Engine:

not build yet

0171FF

MD-369FF

Bj.

Engine:

not build yet

0172FF

MD-369FF

Bj. 2009

Engine: RR 250-C30HU

081007

res

N530TV

MD Helicopters Inc, Mesa, Arizona

201009

reg'd

N530TV

MD Helicopters Inc, Mesa, Arizona

250909

N530TV

Airworthiness test

301109

N530TV

Installation of Auxiliary Fuel System

220110

reg'd

N530TV

Tennessee Valley Authority, Muscle Shoals, Alabama

0173FF

MD-369FF

Bj. 2010

Engine: RR 250-C30

021009

reg'd

N40898

MD Helicopters Inc, Mesa, Arizona

091109

N40898

Airworthiness Test

261010

res

N911HK

MD Helicopters Inc, Mesa, Arizona

011011

reg'd

N911HK

County of Kauai Fire Department, Lihue, Hawaii

0174FF

MD-369FF

Bj. 2010

Engine: RR 250-C30

151009

reg'd

N530KK

MD Helicopters Inc, Mesa, Arizona

020210

N530KK

Airworthiness test

220610

reg'd

N530KK

Las Vegas Metropolitan Police Department, Las Vegas, Nevada

311214

N530KK

Was substantially damaged during an emergency autorotation following a sudden loss of engine power in Las Vegas, Nevada. The two commercial pilots on board sustained minor injuries. (NTSB WPR15TA071)